Michael O'Hare

On September 28, 2012, Straczynski posted that O'Hare had had a heart attack in New York City five days earlier, and had remained in a coma until his death that day. Eight months later, Straczynski revealed the circumstances of O'Hare's departure from Babylon 5 at a presentation about the series at the Phoenix Comicon.

Subsequently, he had one guest role on The Cosby Mysteries and appeared twice on Law & Order, the last time in 2000. He did some voiceover work for commercials and read a radio adaptation of the science fiction novella Think Like a Dinosaur for Seeing Ear Theater.

After 2000, he retired from acting and rarely made public appearances.

His treatments were only partially successful. He reappeared in a cameo appearance early in season two ("The Coming of Shadows") and returned in season three for a two-part episode ("War Without End") which closed his character's story arc. At that time, Straczynski promised O'Hare to keep his condition secret "to my grave". O'Hare told him to instead "keep the secret to my grave", arguing that fans deserved to eventually learn the real reason for his departure, and that his experience could raise awareness and understanding for people with mental illness. He made no further appearances on Babylon 5, but continued to support the show and appeared at conventions and signing events until his retirement from public appearances in 2000.

In 1992, he was cast in the lead role of Commander Jeffrey Sinclair in the science fiction television series Babylon 5. He appeared in the pilot and throughout the show's first season in 1994. He left the cast for mental health reasons that were not disclosed at the time but made guest appearances in the second and third seasons.

He was the lead character in Michael Lengsfield's CINE-award-winning short film Short Term Bonds in 1988, screened at the 1989 Sundance festival.

O'Hare appeared in a number of theatrical productions on Broadway and in regional theaters, including an acclaimed revival of Shaw's Man and Superman with Philip Bosco; in the role of Col. Jessup in the original stage version of A Few Good Men; as Captain Solyony in Chekhov’s Three Sisters. Other notable roles included Alfred in a 1986 stage revival of Little Murders; Jake in A Lie of the Mind and John in Lips Together, Teeth Apart.

Coming from a career military family, he considered joining the US Navy or having a career in professional football, but attended Harvard University, where he studied English literature and played on the Harvard Crimson football team. He joined the university's drama groups and was a performer in “The Wrongway Inn”, the Hasty Pudding Theatricals’ production for 1972. That same year, he went for an “acting tryout” to the New York area, and was cast as Beef Saunders in Good News! at Goodspeed Musicals. He was a member of the Harvard Glee Club during its 1973 World Tour. He left Harvard in 1974 to study at the Juilliard School of Drama. He later took lessons from Sanford Meisner in the mid-1980s.

He co-starred in the biographical TV movie Marciano and an unsold TV pilot Keefer with William Conrad in the late 1970s. In the 1980s, he appeared mainly as guest on a range of television shows, including Trapper John, M.D.; T.J. Hooker; Kate & Allie; The Equalizer; Tales from the Darkside; and Rage of Angels: The Story Continues.

Robert Michael O'Hare Jr. (May 6, 1952 – September 28, 2012) was an American actor who performed on stage and television. He was best known for playing the lead role of space station Commander Jeffrey Sinclair in the science fiction television series Babylon 5, a role he left after the first season due to serious mental health issues.